Number | Date | Country | Kind |
---|---|---|---|
3114638 | Apr 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3824266 | Dieterich et al. | Jul 1974 | |
4264519 | Hennig et al. | Apr 1981 | |
4292255 | Hennig et al. | Sep 1981 |
Number | Date | Country |
---|---|---|
1360019 | Aug 1967 | GBX |
1078390 | Aug 1967 | GBX |
Entry |
---|
Polyurethanes, Chemistry & Technology Part I p. 190 et seq., Saunders & Frisch, Interscience Publishers 1962. |